Five Common Brazing Process Questions
Release time:
2023-01-07
【Summary Description】 With the continuous development of industry, brazing is involved in various industries, and its role is also increasing. Although it is used more and more frequently, in the process of using it, it is still found that there are many common sense errors, including many operators are not very clear. Here, let's make a simple summary of the most common problem: 6. What is the main application of solder paste? Solder paste can be widely used in flame brazing, induction brazing and furnace brazing process. The addition of flux to the solder paste will increase the formulation of the solder paste. When using vacuum brazing or atmosphere protection brazing, the solder paste will not need to add flux. 7. What form of joint assembly should be used for brazing? A number of different joint forms can be employed in brazing, the most widespread of which are butt joints, lap joints, and butt-lap joints. According to the different needs of customers, customers can read the article "Joint Design Principles" to systematically understand and calculate the required lap length of the joint. 8. To what extent can the strength of the brazed joint reach? The strength of brazed joint is mainly determined by many different factors, including the type of base metal, the control of joint gap and the choice of brazing filler metal. With the different choice of base metal and brazing filler metal, the strength of the joint is also changed, the strength of the brazed joint is also closely related to the gap, and the strength of the joint will decrease with the increase of the gap. Typically, the strength of the resulting brazed joint is equal to or greater than the strength of the base metal, depending on the correct solder selection, appropriate joint clearance, and other brazing process operations. Can the temperature of vacuum brazing of stainless steel be lower than 927 ℃? The vacuum brazing temperature of stainless steel cannot be lower than 927 ℃, mainly because the formation of chromium oxide will hinder the flow and spreadability of the solder on the stainless steel base metal. The minimum brazing temperature for vacuum brazing of stainless steel is usually recommend to reach 954 ℃. If nickel plating is performed on the surface of the stainless steel plate, the brazing temperature may be lower than 927°C. 10. What kind of brazing filler metal should be used for 300 series stainless steel in service environment in contact with water? Brazing of stainless steel in water service should use nickel-containing brazing filler metal. Nickel-containing brazing filler metals can improve the corrosion resistance of stainless steel brazed joints.
With the continuous development of industry, brazing is involved in various industries, and its role is also increasing. Although it is used more and more frequently, in the process of using it, it is still found that there are many common sense errors, including many operators are not very clear. Here, let's make a simple summary of the most common problem:
6. What is the main application of solder paste?
Solder paste can be widely used in flame brazing, induction brazing and furnace brazing process. The addition of flux to the solder paste will increase the formulation of the solder paste. When using vacuum brazing or atmosphere protection brazing, the solder paste will not need to add flux.
7. What form of joint assembly should be used for brazing?
A number of different joint forms can be employed in brazing, the most widespread of which are butt joints, lap joints, and butt-lap joints. According to the different needs of customers, customers can read the article "Joint Design Principles" to systematically understand and calculate the required lap length of the joint.
8. To what extent can the strength of the brazed joint reach?
The strength of brazed joint is mainly determined by many different factors, including the type of base metal, the control of joint gap and the choice of brazing filler metal. With the different choice of base metal and brazing filler metal, the strength of the joint is also changed, the strength of the brazed joint is also closely related to the gap, and the strength of the joint will decrease with the increase of the gap. Typically, the strength of the resulting brazed joint is equal to or greater than the strength of the base metal, depending on the correct solder selection, appropriate joint clearance, and other brazing process operations.
Can the temperature of vacuum brazing of stainless steel be lower than 927 ℃?
The vacuum brazing temperature of stainless steel cannot be lower than 927 ℃, mainly because the formation of chromium oxide will hinder the flow and spreadability of the solder on the stainless steel base metal. The minimum brazing temperature for vacuum brazing of stainless steel is usually recommend to reach 954 ℃. If nickel plating is performed on the surface of the stainless steel plate, the brazing temperature may be lower than 927°C.
10. What kind of brazing filler metal should be used for 300 series stainless steel in service environment in contact with water?
Brazing of stainless steel in water service should use nickel-containing brazing filler metal. Nickel-containing brazing filler metals can improve the corrosion resistance of stainless steel brazed joints.
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